TY  - JOUR
A1  - Neumaier, Felix
A1  - Weiss, Miriam
A1  - Veldeman, Michael
A1  - Kotliar, Konstantin
A1  - Wiesmann, Martin
A1  - Schulze-Steinen, Henna
A1  - Höllig, Anke
A1  - Clusmann, Hans
A1  - Schubert, Gerrit Alexander
A1  - Albanna, Walid
T1  - Changes in endogenous daytime melatonin levels after aneurysmal subarachnoid hemorrhage – preliminary findings from an observational cohort study
JF  - Clinical Neurology and Neurosurgery
N2  - Aneurysmal subarachnoid hemorrhage (aSAH) is associated with early and delayed brain injury due to several underlying and interrelated processes, which include inflammation, oxidative stress, endothelial, and neuronal apoptosis. Treatment with melatonin, a cytoprotective neurohormone with anti-inflammatory, anti-oxidant and anti-apoptotic effects, has been shown to attenuate early brain injury (EBI) and to prevent delayed cerebral vasospasm in experimental aSAH models. Less is known about the role of endogenous melatonin for aSAH outcome and how its production is altered by the pathophysiological cascades initiated during EBI. In the present observational study, we analyzed changes in melatonin levels during the first three weeks after aSAH.
KW  - constructive alignment
KW  - examination
KW  - long-term retention
KW  - multimodal
KW  - practical learning
Y1  - 2021
U6  - http://dx.doi.org/10.1016/j.clineuro.2021.106870
SN  - 0303-8467
VL  - 208
IS  - Article No.: 106870
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Waldvogel, Janice
A1  - Freyler, Kathrin
A1  - Helm, Michael
A1  - Monti, Elena
A1  - Stäudle, Benjamin
A1  - Gollhofer, Albert
A1  - Narici, Marco V.
A1  - Ritzmann, Ramona
A1  - Albracht, Kirsten
T1  - Changes in gravity affect neuromuscular control, biomechanics, and muscle-tendon mechanics in energy storage and dissipation tasks
JF  - Journal of Applied Physiology
N2  - This study evaluates neuromechanical control and muscle-tendon interaction during energy storage and dissipation tasks in hypergravity. During parabolic flights, while 17 subjects performed drop jumps (DJs) and drop landings (DLs), electromyography (EMG) of the lower limb muscles was combined with in vivo fascicle dynamics of the gastrocnemius medialis, two-dimensional (2D) kinematics, and kinetics to measure and analyze changes in energy management. Comparisons were made between movement modalities executed in hypergravity (1.8 G) and gravity on ground (1 G). In 1.8 G, ankle dorsiflexion, knee joint flexion, and vertical center of mass (COM) displacement are lower in DJs than in DLs; within each movement modality, joint flexion amplitudes and COM displacement demonstrate higher values in 1.8 G than in 1 G. Concomitantly, negative peak ankle joint power, vertical ground reaction forces, and leg stiffness are similar between both movement modalities (1.8 G). In DJs, EMG activity in 1.8 G is lower during the COM deceleration phase than in 1 G, thus impairing quasi-isometric fascicle behavior. In DLs, EMG activity before and during the COM deceleration phase is higher, and fascicles are stretched less in 1.8 G than in 1 G. Compared with the situation in 1 G, highly task-specific neuromuscular activity is diminished in 1.8 G, resulting in fascicle lengthening in both movement modalities. Specifically, in DJs, a high magnitude of neuromuscular activity is impaired, resulting in altered energy storage. In contrast, in DLs, linear stiffening of the system due to higher neuromuscular activity combined with lower fascicle stretch enhances the buffering function of the tendon, and thus the capacity to safely dissipate energy.
KW  - electromyography
KW  - locomotion
KW  - overload
KW  - stretch-shortening cycle
KW  - ultrasound
Y1  - 2023
U6  - http://dx.doi.org/10.1152/japplphysiol.00279.2022
SN  - 1522-1601 (Onlineausgabe)
SN  - 8750-7587 (Druckausgabe)
VL  - 134
IS  - 1
SP  - 190
EP  - 202
PB  - American Physiological Society
CY  - Bethesda, Md.
ER  - 
TY  - CHAP
A1  - Digel, Ilya
A1  - Sadykov, R.
A1  - Temiz Artmann, Aysegül
A1  - Artmann, Gerhard
T1  - Changes in intestinal microflora in rats induced by oral exposure to low lead (II) concentrations
T2  - Lead Exposure and Poisoning: Clinical Symptoms, Medical Management and Preventive Strategies
Y1  - 2015
SN  - 9781634826990
SP  - 75
EP  - 99
PB  - Nova Science Publ.
ER  - 
TY  - JOUR
A1  - Feucht, Nikolaus
A1  - Schönbach, Etienne Michael
A1  - Lanzl, Ines
A1  - Kotliar, Konstantin
A1  - Lohmann, Chris Patrick
A1  - Maier, Mathias
T1  - Changes in the foveal microstructure after intravitreal bevacizumab application in patients with retinal vascular disease
JF  - Clinical Ophthalmology
Y1  - 2013
SN  - 1177-5483
VL  - 7
SP  - 173
EP  - 178
PB  - Dove Medical Press
CY  - Auckland, New Zealand
ER  - 
TY  - JOUR
A1  - Hanrath, Wilhelm
T1  - Character tables of some factor groups of space groups
JF  - Perfect groups / Derek F. Holt and W. Plesken
Y1  - 1989
SN  - 0-19-853559-7
SP  - 357
EP  - 359
PB  - Clarendon Press
CY  - Oxford
ER  - 
TY  - JOUR
A1  - Schwarzer, Klemens
A1  - Silva, Maria Eugenia Vieira da
T1  - Characterisation and design methods of solar cookers / Schwarzer, Klemens ; Silva, Maria Eugenia Vieira da
JF  - Solar energy. 82 (2008), H. 2
Y1  - 2008
SN  - 0038-092X
SP  - 157
EP  - 163
ER  - 
TY  - CHAP
A1  - Reisert, Steffen
A1  - Geissler, H.
A1  - Flörke, R.
A1  - Weiler, C.
A1  - Wagner, P.
A1  - Schöning, Michael Josef
ED  - Abdelghani, Adnane
ED  - Schöning, Michael Josef
T1  - Characterisation of aseptic sterilisation processes using an electronic nose
T2  - Nanoscale Science and Technology (NS&T´12) : Proceedings Book Humboldt Kolleg ; Tunisia, 17-19 March, 2012
Y1  - 2012
SP  - 45
EP  - 45
ER  - 
TY  - JOUR
A1  - Reisert, Steffen
A1  - Geissler, Hanno
A1  - Flörke, Rudolf
A1  - Weiler, Christian
A1  - Wagner, Patrick
A1  - Schöning, Michael Josef
T1  - Characterisation of aseptic sterilisation processes using an electronic nose
JF  - International journal of nanotechnology
Y1  - 2013
SN  - 1475-7435 (Print) 7141-8151 (Online)
VL  - Vol. 10
IS  - No. 5-7
SP  - 470
EP  - 484
PB  - Inderscience Enterprises
CY  - Genève
ER  - 
TY  - JOUR
A1  - Abouzar, Maryam H.
A1  - Poghossian, Arshak
A1  - Razavi, A.
A1  - Williams, O. A.
A1  - Bijnens, N.
A1  - Wagner, P.
A1  - Schöning, Michael Josef
T1  - Characterisation of capacitive field-effect sensors with a nanocrystalline-diamond film as transducer material for multi-parameter sensing
JF  - Biosensors and Bioelectronics. 24 (2009), H. 5
Y1  - 2009
SN  - 0956-5663
N1  - Selected Papers from the Tenth World Congress on Biosensors Shangai, China, May 14-16, 2008 ; Zeitschrift früher u.d.T. : Biosensors
SP  - 1298
EP  - 1304
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Kirchner, Patrick
A1  - Reisert, Steffen
A1  - Pütz, Patrick
A1  - Keusgen, Michael
A1  - Schöning, Michael Josef
T1  - Characterisation of polymeric materials as passivation layer for calorimetric H2O2 gas sensors
JF  - Physica Status Solidi (a)
N2  - Calorimetric gas sensors for monitoring the H₂O₂ concentration at elevated temperatures in industrial sterilisation processes have been presented in previous works. These sensors are built up in form of a differential set-up of a catalytically active and passive temperature-sensitive structure. Although, various types of catalytically active dispersions have been studied, the passivation layer has to be established and therefore, chemically as well as physically characterised. In the present work, fluorinated ethylene propylene (FEP), perfluoralkoxy (PFA) and epoxy-based SU-8 photoresist as temperature-stable polymeric materials have been investigated for sensor passivation in terms of their chemical inertness against H₂O₂, their hygroscopic properties as well as their morphology. The polymeric materials were deposited via spin-coating on the temperature-sensitive structure, wherein spin-coated FEP and PFA show slight agglomerates. However, they possess a low absorption of humidity due to their hydrophobic surface, whereas the SU-8 layer has a closed surface but shows a slightly higher absorption of water. All of them were inert against gaseous H₂O₂ during the characterisation in H₂O₂ atmosphere that demonstrates their suitability as passivation layer for calorimetric H₂O₂ gas sensors.
Y1  - 2012
U6  - http://dx.doi.org/10.1002/pssa.201100773
SN  - 1862-6319
VL  - 209
IS  - 5
SP  - 859
EP  - 863
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Schroth, P.
A1  - Lüth, H.
A1  - Hummel, Hans E.
A1  - Schütz, S.
A1  - Schöning, Michael Josef
T1  - Characterising an insect antenna as a receptor for a biosensor by means of impedance spectroscopy
JF  - Scaling down in electrochemistry : electrochemical micro- and nanosystem technology ; proceedings of the 3rd International Symposium on Electrochemical Microsystem Technologies, Garmisch-Patenkirchen, Germany, 11 - 15 September 2000 / ed. by J. W. Schultz
Y1  - 2001
SN  - 0-08-044014-2
SP  - 293
EP  - 297
PB  - Elsevier [u.a.]
CY  - Amsterdam [u.a.]
ER  - 
TY  - BOOK
A1  - Gottschalk, Sandra
A1  - Janz, Norbert
A1  - Rennings, Klaus
T1  - Characteristics and Performance of Eco-Innovative Firms in the German Service Sector
Y1  - 1998
ER  - 
TY  - JOUR
A1  - Lassonczyk, Beate
T1  - Characteristics of a fossil soil developed on the basement complex in the northeast Somalia
JF  - Berliner geowissenschaftliche Abhandlungen / Reihe A, Geologie und Paläontologie / hrsg. von d. Geowissenschaftlichen Instituten der Freien u. d. Technischen Universität Berlin. 120 A (1990)
Y1  - 1990
SN  - 0172-8784
SP  - 713
EP  - 718
ER  - 
TY  - JOUR
A1  - Helsper, Christoph
A1  - Mölter, W.
T1  - Characteristics of a Nebulizer with Cyclone Preseparator / Mölter, W. ; Helsper, C.
JF  - Aerosols, their generation, behaviour and applications. Annual Conference of the Aerosol Society / Aerosol Society (UK) ; 5.
Y1  - 1991
SP  - 89
EP  - 94
CY  - Loughborough
ER  - 
TY  - CHAP
A1  - Oertel, Mario
A1  - Bung, Daniel B.
T1  - Characteristics of cross-bar block ramp flows
T2  - Hydraulic structures into the 21st century : 4th IAHR International Symposium on Hydraulic Structures : 9.-11.2.2012, Porto
Y1  - 2012
SN  - 978-989-8509-01-7
ER  - 
TY  - CHAP
A1  - Roth, J.
A1  - Möhring, S.
A1  - Tippkötter, Nils
T1  - Characterization and evaluation of lignocellulosic biomass 130 hydrolysates for ABE fermentation
T2  - New frontiers of biotech-processes (Himmelfahrtstagung) : 02-04 May 2016, Rhein-Mosel-Halle, Koblenz/Germany
Y1  - 2016
SP  - 130
PB  - DECHEMA
CY  - Frankfurt am Main
ER  - 
TY  - JOUR
A1  - Mukherjee, Krishnendu
A1  - Prahl, Ulrich
A1  - Bleck, Wolfgang
A1  - Reisgen, Uwe
A1  - Schleser, Markus
A1  - Abdurakhmanov, Aydemir
T1  - Characterization and modelling techniques for gas metal arc welding of DP 600 sheet steels
JF  - Materialwissenschaft und Werkstofftechnik
N2  - The objectives of the present work are to characterize the Gas Metal Arc Welding process of DP 600 sheet steel and to summarize the modelling techniques. The time-temperature evolution during the welding cycle was measured experimentally and modelled with the softwaretool SimWeld. To model the phase transformations during the welding cycle dilatometer tests were done to quantify the parameters for phase field modelling by MICRESS®. The important input parameters are interface mobility, nucleation density, etc. A contribution was made to include austenite to bainite transformation in MICRESS®. This is useful to predict the microstructure in the fast cooling segments. The phase transformation model is capable to predict the microstructure along the heating and cooling cycles of welding. Tensile tests have shown the evidence of failure at the heat affected zone, which has the ferrite-tempered martensite microstructure.
Y1  - 2010
U6  - http://dx.doi.org/10.1002/mawe.201000692
SN  - 1521-4052
VL  - 41
IS  - 11
SP  - 972
EP  - 983
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - JOUR
A1  - Holtrup, S.
A1  - Sadeghfam, Arash
A1  - Heuermann, Holger
A1  - Awakowicz, P.
T1  - Characterization and optimization technique for microwave-driven high-intensity discharge lamps using hot S-parameters
JF  - IEEE transactions on microwave theories and techniques
N2  - High-intensity discharge lamps can be driven by radio-frequency signals in the ISM frequency band at 2.45 GHz, using a matching network to transform the impedance of the plasma to the source impedance. To achieve an optimal operating condition, a good characterization of the lamp in terms of radio frequency equivalent circuits under operating conditions is necessary, enabling the design of an efficient matching network. This paper presents the characterization technique for such lamps and presents the design of the required matching network. For the characterization, a high-intensity discharge lamp was driven by a monofrequent large signal at 2.45 GHz, whereas a frequency sweep over 300 MHz was performed across this signal to measure so-called small-signal hot S-parameters using a vector network analyzer. These parameters are then used as an equivalent load in a circuit simulator to design an appropriate matching network. Using the measured data as a black-box model in the simulation results in a quick and efficient method to simulate and design efficient matching networks in spite of the complex plasma behavior. Furthermore, photometric analysis of high-intensity discharge lamps are carried out, comparing microwave operation to conventional operation.
Y1  - 2014
U6  - http://dx.doi.org/10.1109/TMTT.2014.2342652
SN  - 0018-9480
VL  - 62
IS  - 10
SP  - 2471
EP  - 2480
PB  - IEEE
CY  - New York
ER  - 
TY  - JOUR
A1  - Selmer, Thorsten
A1  - Kim, Jihoe
A1  - Darley, Daniel
A1  - Buckel, Wolfgang
T1  - Characterization of (R)-2-hydroxyisocaproate dehydrogenase and a family III coenzyme A transferase involved in reduction of L-leucine to isocaproate by Clostridium difficile / Kim, J. ; Darley, D. ; Selmer, T. ; Buckel, W.
JF  - Applied and Environmental Microbiology. 72 (2006), H. 9
Y1  - 2006
SN  - 0099-2240
N1  - PMID: 16957230
SP  - 6062
EP  - 6069
ER  - 
TY  - JOUR
A1  - Jossek, Ralf
A1  - Bongaerts, Johannes
A1  - Sprenger, Georg A.
T1  - Characterization of a new feedback-resistant 3-deoxy-D-arabinoheptulosonate 7-phosphate synthase AroF of Escherichia coli
JF  - FEMS microbiology letters
Y1  - 2001
SN  - 1574-6968
VL  - Vol. 202
IS  - Iss. 1
SP  - 145
EP  - 148
ER  -